Class I Division I means the project site may produce combustible gas, vapor normally when the project operates, here are some recommended explosion proof lighting, control box and fittings for your options subject to NEC UL and CSA standard.
In Simple Word
Class 1 Div 1 location, C1D1 for short, Class 1 Division 1 for full name, means ignitable concentrations of hazards, such as flammable vapors and gases, exists under normal operation conditions, and/or where hazard is caused by frequent maintenance or repair work or frequent equipment failure.
In Quantitative Measurement
Class 1 Div 1 location means ignitable concentrations of hazards, such as flammable vapors and gases, present more than 10 hours every year.
A Class 1, Division 1 location is a location:
In which ignitible concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors can exist under normal operating conditions
In which ignitible concentrations of such flammable gases, flammable liquid-produced vapors, or combustible liquids above their flash points may exist frequently because of repair or maintenance operations or because of leakage
In which breakdown or faulty operation of equipment or processes might release ignitible concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors and might also cause simultaneous failure of electrical equipment in such a way as to directly cause the electrical equipment to become a source of ignition
C1D1
UL/Intertek
Nema4X
Class I Division 1
Zone 1&2, Zone 21&22
LED 30-240W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 30-150W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 20-200W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 80-300W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 20-120W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 2x5W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 2x5W
Type 4X, IP67
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP65
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP68
Class I Division 1
Zone 1&2, Zone 21&22
LED 2x5W
Type 4X, IP65
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP65
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP67
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.32A
Type 4X, IP66
Built-in Switch
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.32A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.32A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.400A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.250A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.630A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.250A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.1200A
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.630A
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M75x1.5(NPT 2 1/2")
Type 4X, IP66
Mental
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M75x1.5(NPT 2 1/2")
Type 4X, IP66
Non-armored
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M75x1.5(NPT 2 1/2")
Type 4X, IP66
Armored
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.63x1.5(NPT 2")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.63x1.5(NPT 2")
Type 4X, IP66
Yes, Class 1 Div 1 require explosion proof. Based on Class 1 Div 1 definition, Class 1 Div 1 is the most stringent safety grade among all explosion proof grades since the existing frequency of hazardous gas is very high, the lighting fittings should be enable to contain the explosion through a high impact resistance enclosed housing, Class 1 Div 1 MUST require explosion proof.
C1D1 is the abbreviation of Class 1 Division 1, class i division 1. Class i Division 1 hazardous locations have serious possibility to form an explosive environment asking for forced explosion proof protection for electrical device. C1D1 certification involves in UL certified and other issue body such as Intertek certificated in accordance with C1D1 classification from the same NEC article 500 standard.
Class 1 Div 1 equals to C1D1, Class 1 Div 2 equals to C1D2. Both Class 1 Div 1 and Class 1 Div 2 belong to the Class 1 hazards, flammable gas , vapors according to class 1 division 1 electrical requirements and class 1 division 2 electrical requirements, the main difference is only the existing frequency of hazards, C1D1 present for more than 10 hours every year, C1D2 present ranges from 1 hour to 10 hours every year.
No, ethanol extraction require C1D2 only. Even ethanol is a kind of volatile and flammable liquid, it is not classified into typical hazards within class 1 group and can be considered “Not Very Hazardous” to be easily ignited under normal processing procedures, you can still require C1D1 for ethanol extraction, but it is not mandatory, ethanol extraction require C1D2 in practical application.
A “Class I” hazardous location may form under the presence of flammable gases or vapors in the air in sufficient concentration to be explosive or ignitable. When these materials appear in this so-called “Class 1 environment”, a potential for explosion exists if an electrical or other source of ignition is present. Electrical classification class 1 covers Class 1 Division 1 rating and Class 1 Division 2 rating.
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